masslogger | 621617fede3ceec20c51560f4c2aff347bf760a5182a3458d5f45f9d8c6acee3

Analysis

max time kernel
162s
max time network
176s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
20-05-2022 14:17

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General

Target

Maersk Ratesheet.Scan...exe
Size

1.2MB
MD5

74cff6e4840dd481d888d12f89629f4a
SHA1

4d8b01c1939faf241abdeef11e87a16c498bc2e2
SHA256

53b4179d18dc27443d5182752aaf6d78253ec7fc4eac192dcf6078884af51535
SHA512

9a3edd39d511c4098cc976d072a2d0b628aaff76be126f5b1143a8114cf56183aed64aacbca48b8ce5086a79f4b1acbc16144a2800e9b10a558604cdbc90adeb

Score

10^/10

masslogger ransomware spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\8236ADF044\Log.txt

Family

masslogger

Ransom Note

################################################################# MassLogger v1.3.4.0 ################################################################# ### Logger Details ### User Name: Admin IP: 154.61.71.50 Location: United States OS: Microsoft Windows 10 Pro64bit CPU: Intel Core Processor (Broadwell) GPU: Microsoft Basic Display Adapter AV: NA Screen Resolution: 1280x720 Current Time: 5/20/2022 5:22:14 PM MassLogger Started: 5/20/2022 5:21:53 PM Interval: 1 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\Maersk Ratesheet.Scan...exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes:

Signatures

MassLogger
Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.
stealer spyware masslogger

MassLogger Main Payload 33 IoCs

resource	yara_rule
behavioral2/memory/1112-132-0x0000000000BD0000-0x0000000000C78000-memory.dmp	family_masslogger
behavioral2/memory/1112-134-0x0000000000BD0000-0x0000000000C78000-memory.dmp	family_masslogger
behavioral2/memory/1112-136-0x0000000000BD0000-0x0000000000C78000-memory.dmp	family_masslogger
behavioral2/memory/1112-138-0x0000000000BD0000-0x0000000000C78000-memory.dmp	family_masslogger
behavioral2/memory/1112-140-0x0000000000BD0000-0x0000000000C78000-memory.dmp	family_masslogger
behavioral2/memory/1112-142-0x0000000000BD0000-0x0000000000C78000-memory.dmp	family_masslogger
behavioral2/memory/1112-144-0x0000000000BD0000-0x0000000000C78000-memory.dmp	family_masslogger
behavioral2/memory/1112-146-0x0000000000BD0000-0x0000000000C78000-memory.dmp	family_masslogger
behavioral2/memory/1112-148-0x0000000000BD0000-0x0000000000C78000-memory.dmp	family_masslogger
behavioral2/memory/1112-150-0x0000000000BD0000-0x0000000000C78000-memory.dmp	family_masslogger
behavioral2/memory/1112-152-0x0000000000BD0000-0x0000000000C78000-memory.dmp	family_masslogger
behavioral2/memory/1112-154-0x0000000000BD0000-0x0000000000C78000-memory.dmp	family_masslogger
behavioral2/memory/1112-156-0x0000000000BD0000-0x0000000000C78000-memory.dmp	family_masslogger
behavioral2/memory/1112-158-0x0000000000BD0000-0x0000000000C78000-memory.dmp	family_masslogger
behavioral2/memory/1112-160-0x0000000000BD0000-0x0000000000C78000-memory.dmp	family_masslogger
behavioral2/memory/1112-162-0x0000000000BD0000-0x0000000000C78000-memory.dmp	family_masslogger
behavioral2/memory/1112-164-0x0000000000BD0000-0x0000000000C78000-memory.dmp	family_masslogger
behavioral2/memory/1112-166-0x0000000000BD0000-0x0000000000C78000-memory.dmp	family_masslogger
behavioral2/memory/1112-168-0x0000000000BD0000-0x0000000000C78000-memory.dmp	family_masslogger
behavioral2/memory/1112-170-0x0000000000BD0000-0x0000000000C78000-memory.dmp	family_masslogger
behavioral2/memory/1112-172-0x0000000000BD0000-0x0000000000C78000-memory.dmp	family_masslogger
behavioral2/memory/1112-174-0x0000000000BD0000-0x0000000000C78000-memory.dmp	family_masslogger
behavioral2/memory/1112-176-0x0000000000BD0000-0x0000000000C78000-memory.dmp	family_masslogger
behavioral2/memory/1112-178-0x0000000000BD0000-0x0000000000C78000-memory.dmp	family_masslogger
behavioral2/memory/1112-180-0x0000000000BD0000-0x0000000000C78000-memory.dmp	family_masslogger
behavioral2/memory/1112-182-0x0000000000BD0000-0x0000000000C78000-memory.dmp	family_masslogger
behavioral2/memory/1112-184-0x0000000000BD0000-0x0000000000C78000-memory.dmp	family_masslogger
behavioral2/memory/1112-186-0x0000000000BD0000-0x0000000000C78000-memory.dmp	family_masslogger
behavioral2/memory/1112-188-0x0000000000BD0000-0x0000000000C78000-memory.dmp	family_masslogger
behavioral2/memory/1112-190-0x0000000000BD0000-0x0000000000C78000-memory.dmp	family_masslogger
behavioral2/memory/1112-192-0x0000000000BD0000-0x0000000000C78000-memory.dmp	family_masslogger
behavioral2/memory/1112-194-0x0000000000BD0000-0x0000000000C78000-memory.dmp	family_masslogger
behavioral2/memory/1112-196-0x0000000000BD0000-0x0000000000C78000-memory.dmp	family_masslogger

MassLogger log file 1 IoCs

Detects a log file produced by MassLogger.

yara_rule
masslogger_log_file

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation	Maersk Ratesheet.Scan...exe

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\vvbn.vbs	notepad.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
9	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 408 set thread context of 1112	408	Maersk Ratesheet.Scan...exe	82

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
408	Maersk Ratesheet.Scan...exe
408	Maersk Ratesheet.Scan...exe
1112	Maersk Ratesheet.Scan...exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
408	Maersk Ratesheet.Scan...exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1112	Maersk Ratesheet.Scan...exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 408 wrote to memory of 4012	408	Maersk Ratesheet.Scan...exe	81
PID 408 wrote to memory of 4012	408	Maersk Ratesheet.Scan...exe	81
PID 408 wrote to memory of 4012	408	Maersk Ratesheet.Scan...exe	81
PID 408 wrote to memory of 4012	408	Maersk Ratesheet.Scan...exe	81
PID 408 wrote to memory of 4012	408	Maersk Ratesheet.Scan...exe	81
PID 408 wrote to memory of 1112	408	Maersk Ratesheet.Scan...exe	82
PID 408 wrote to memory of 1112	408	Maersk Ratesheet.Scan...exe	82
PID 408 wrote to memory of 1112	408	Maersk Ratesheet.Scan...exe	82

C:\Users\Admin\AppData\Local\Temp\Maersk Ratesheet.Scan...exe
"C:\Users\Admin\AppData\Local\Temp\Maersk Ratesheet.Scan...exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:408
- C:\Windows\SysWOW64\notepad.exe
  "C:\Windows\system32\notepad.exe"
  2⤵
  - Drops startup file
  PID:4012
- C:\Users\Admin\AppData\Local\Temp\Maersk Ratesheet.Scan...exe
  "C:\Users\Admin\AppData\Local\Temp\Maersk Ratesheet.Scan...exe"
  2⤵
  - Checks computer location settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1112

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/408-133-0x0000000000400000-0x0000000000535000-memory.dmp

Filesize
1.2MB

Download
memory/1112-166-0x0000000000BD0000-0x0000000000C78000-memory.dmp

Filesize
672KB

Download
memory/1112-194-0x0000000000BD0000-0x0000000000C78000-memory.dmp

Filesize
672KB

Download
memory/1112-134-0x0000000000BD0000-0x0000000000C78000-memory.dmp

Filesize
672KB

Download
memory/1112-136-0x0000000000BD0000-0x0000000000C78000-memory.dmp

Filesize
672KB

Download
memory/1112-138-0x0000000000BD0000-0x0000000000C78000-memory.dmp

Filesize
672KB

Download
memory/1112-140-0x0000000000BD0000-0x0000000000C78000-memory.dmp

Filesize
672KB

Download
memory/1112-142-0x0000000000BD0000-0x0000000000C78000-memory.dmp

Filesize
672KB

Download
memory/1112-144-0x0000000000BD0000-0x0000000000C78000-memory.dmp

Filesize
672KB

Download
memory/1112-146-0x0000000000BD0000-0x0000000000C78000-memory.dmp

Filesize
672KB

Download
memory/1112-148-0x0000000000BD0000-0x0000000000C78000-memory.dmp

Filesize
672KB

Download
memory/1112-150-0x0000000000BD0000-0x0000000000C78000-memory.dmp

Filesize
672KB

Download
memory/1112-152-0x0000000000BD0000-0x0000000000C78000-memory.dmp

Filesize
672KB

Download
memory/1112-168-0x0000000000BD0000-0x0000000000C78000-memory.dmp

Filesize
672KB

Download
memory/1112-156-0x0000000000BD0000-0x0000000000C78000-memory.dmp

Filesize
672KB

Download
memory/1112-158-0x0000000000BD0000-0x0000000000C78000-memory.dmp

Filesize
672KB

Download
memory/1112-160-0x0000000000BD0000-0x0000000000C78000-memory.dmp

Filesize
672KB

Download
memory/1112-162-0x0000000000BD0000-0x0000000000C78000-memory.dmp

Filesize
672KB

Download
memory/1112-643-0x0000000005DA0000-0x0000000005E06000-memory.dmp

Filesize
408KB

Download
memory/1112-132-0x0000000000BD0000-0x0000000000C78000-memory.dmp

Filesize
672KB

Download
memory/1112-154-0x0000000000BD0000-0x0000000000C78000-memory.dmp

Filesize
672KB

Download
memory/1112-170-0x0000000000BD0000-0x0000000000C78000-memory.dmp

Filesize
672KB

Download
memory/1112-172-0x0000000000BD0000-0x0000000000C78000-memory.dmp

Filesize
672KB

Download
memory/1112-174-0x0000000000BD0000-0x0000000000C78000-memory.dmp

Filesize
672KB

Download
memory/1112-176-0x0000000000BD0000-0x0000000000C78000-memory.dmp

Filesize
672KB

Download
memory/1112-178-0x0000000000BD0000-0x0000000000C78000-memory.dmp

Filesize
672KB

Download
memory/1112-180-0x0000000000BD0000-0x0000000000C78000-memory.dmp

Filesize
672KB

Download
memory/1112-182-0x0000000000BD0000-0x0000000000C78000-memory.dmp

Filesize
672KB

Download
memory/1112-184-0x0000000000BD0000-0x0000000000C78000-memory.dmp

Filesize
672KB

Download
memory/1112-186-0x0000000000BD0000-0x0000000000C78000-memory.dmp

Filesize
672KB

Download
memory/1112-188-0x0000000000BD0000-0x0000000000C78000-memory.dmp

Filesize
672KB

Download
memory/1112-190-0x0000000000BD0000-0x0000000000C78000-memory.dmp

Filesize
672KB

Download
memory/1112-192-0x0000000000BD0000-0x0000000000C78000-memory.dmp

Filesize
672KB

Download
memory/1112-644-0x0000000006400000-0x000000000640A000-memory.dmp

Filesize
40KB

Download
memory/1112-196-0x0000000000BD0000-0x0000000000C78000-memory.dmp

Filesize
672KB

Download
memory/1112-641-0x0000000004CF0000-0x0000000004D82000-memory.dmp

Filesize
584KB

Download
memory/1112-642-0x0000000004D90000-0x0000000005334000-memory.dmp

Filesize
5.6MB

Download
memory/1112-164-0x0000000000BD0000-0x0000000000C78000-memory.dmp

Filesize
672KB

Download